JPS56117434A - Antenna device - Google Patents

Antenna device

Info

Publication number
JPS56117434A
JPS56117434A JP2201080A JP2201080A JPS56117434A JP S56117434 A JPS56117434 A JP S56117434A JP 2201080 A JP2201080 A JP 2201080A JP 2201080 A JP2201080 A JP 2201080A JP S56117434 A JPS56117434 A JP S56117434A
Authority
JP
Japan
Prior art keywords
antenna element
reception
antenna device
switch circuit
antenna
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2201080A
Other languages
Japanese (ja)
Inventor
Shintaro Gomi
Katsuaki Kawamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pioneer Corp
Original Assignee
Pioneer Electronic Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP2201080A priority Critical patent/JPS56117434A/en
Publication of JPS56117434A publication Critical patent/JPS56117434A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line

Abstract

PURPOSE:To give no effect to the antenna element that is performing a reception, by giving an earthing or a detuning to the antenna element performing no reception through a switch circuit. CONSTITUTION:When the antenna element 1 is no used, the switch circuit 3 is turned on by the switch signal supplied from the input terminal T2. Thus the element 1 is earthed. In this instant, the element 1 has a length having no relation with the wavlength of the received frequency since the element 1 is contracted.
JP2201080A 1980-02-22 1980-02-22 Antenna device Pending JPS56117434A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2201080A JPS56117434A (en) 1980-02-22 1980-02-22 Antenna device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2201080A JPS56117434A (en) 1980-02-22 1980-02-22 Antenna device

Publications (1)

Publication Number Publication Date
JPS56117434A true JPS56117434A (en) 1981-09-14

Family

ID=12071023

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2201080A Pending JPS56117434A (en) 1980-02-22 1980-02-22 Antenna device

Country Status (1)

Country Link
JP (1) JPS56117434A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59193630A (en) * 1983-04-15 1984-11-02 Matsushita Electric Ind Co Ltd Radio receiver

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4837385U (en) * 1971-09-07 1973-05-07
JPS50134318A (en) * 1974-03-29 1975-10-24

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4837385U (en) * 1971-09-07 1973-05-07
JPS50134318A (en) * 1974-03-29 1975-10-24

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59193630A (en) * 1983-04-15 1984-11-02 Matsushita Electric Ind Co Ltd Radio receiver
JPH0320092B2 (en) * 1983-04-15 1991-03-18 Matsushita Electric Ind Co Ltd

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